3/4th do not know English or Hindi
So 1/4th know English or Hindi or both
1/6 know English and 1/8th know Hindi
Now, 1/4-1/6-1/8 = 1/24
So 1/4th know English or Hindi or both
1/6 know English and 1/8th know Hindi
Now, 1/4-1/6-1/8 = 1/24





